Comtech EF Data DT-4500-A Series - Manual (Page 130)

DT-4500-A Series Downconverters Revision 1
Appendix A MN-DT4500A
A–20
A.7.3.2 Automatic/Manual Mode
This command provides for automatic switching by the backup converter if both units are in the
Redundancy Mode. This command is only accepted by the backup converter. If a chain converter
is set in Manual Mode, the backup converter will log the occurrence and not act upon further
information from the converter until put into Automatic Mode. The default is off.
Command Details
Automatic Mode: _xx_y'cr'
Confirmation: >DEV/SAM_xx_y'cr''lf']
Automatic Status: _xx_'cr'
Confirmation: >DEV/SAM_xx_y'cr''lf']
Where: xx = 01 to 12, converter number
y = A for Auto; M for Manual
A.7.3.3 Backup Mode
This command allows the user to force a backup condition for maintenance and test purposes.
This command must be sent to the converter designated as the backup converter (i.e., “BU”).
When activated this command forces the backup converter to assume the state of the specified
chain converter and forces the chain converter offline.
Command Details
Initiate a Backup:
Confirmation: >DEV/FBU_xx_y'cr''lf']
Where: xx = 01 to 12, converter number
y = ‘F’ to force a backup ‘N’ to remove a backup
Retrieve Backup Status: _'cr'
Confirmation: >DEV/FBU_xx_zzzzz'cr''lf']
Where: xx = 01 to 12, converter number. If zzzzz = NONE, converter
number is not displayed.
zzzzz = ‘NONE’ if no backup active
= ‘ACTIVE’ if an automatic backup has occurred
= ‘FORCED’ if a forced backup is active